US7820897B2ActiveUtilityA1

String for musical instrument and method for manufacturing the same

Assignee: YAMAHA CORPPriority: Mar 26, 2007Filed: Mar 26, 2007Granted: Oct 26, 2010
Est. expiryMar 26, 2027(~0.7 yrs left)· nominal 20-yr term from priority
G10D 3/10
45
PatentIndex Score
3
Cited by
12
References
8
Claims

Abstract

A string for a musical instrument of this invention includes a core and a winding wound around the core to have a wound string structure. The winding has a winding body, and a coating film formed on the winding body. The coating film includes a vinyl resin and aminotriazole.

Claims

exact text as granted — not AI-modified
1. A string for a musical instrument used to be directly contacted by a human hand, consisting of:
 a single core; and, 
 a winding wound around the single core, the winding having a winding body and a coating film formed on said winding body, the coating film consisting of a mixture of vinyl resin and aminotriazole, whereby rusting of the string is inhibited. 
 
     
     
       2. The string for a musical instrument according to  claim 1 , wherein said vinyl resin has a vinyl chloride monomer unit and a vinyl acetate monomer unit. 
     
     
       3. The string for a musical instrument according to  claim 2 , wherein said vinyl resin further has a maleic acid monomer unit. 
     
     
       4. The string for a musical instrument according to  claim 1 , wherein the thickness of said coating film is 2 μm or less. 
     
     
       5. The string for a musical instrument according to  claim 1 , wherein said winding body is formed from copper or an alloy comprising copper. 
     
     
       6. A method for manufacturing a string for a musical instrument used to be directly contacted by a human hand, consisting of the ordered steps of:
 applying a coating liquid consisting of vinyl resin and aminotriazole, to a winding body; 
 drying said coating liquid to form a coating film so as to form a winding; and 
 wrapping said winding around a single core, whereby rusting of the string is inhibited. 
 
     
     
       7. The string for a musical instrument according to  claim 1 , wherein said coating film consists of 0.1 to 20 wt % aminotriazole and at least 80 wt % vinyl resin. 
     
     
       8. The string for a musical instrument according to  claim 7 , wherein said aminotriazole is 0.3 to 3 wt % and said at least vinyl resin is at least 97 wt %.

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